Husaberg
Go Back   Husaberg Forum > Mechanical and Technical > Mechanical

Mechanical Mechanical Forum - spinning bits and gyrating bobs


Reply
 
LinkBack Thread Tools Display Modes
June 14th, 2013, 11:11 AM   #1
Senior Member
 
Tamas's Avatar
 
Joined: Nov 2012
From: Transilvania

Posts: 170
Thanks: 0

I Ride: KAWASAKI KFX450R
This isn't normal I'm guessing

Things are getting better and better...... . I can feel the grooves with my finger.
How bad is this?

[attachment=0:29rktajd]DSCN2394.JPG[/attachment:29rktajd]
Cheers, Tom
Attached Thumbnails
This isn't normal I'm guessing-dscn2394.jpg  
Tamas is offline  
 
June 14th, 2013, 11:27 AM   #2
Moderator
 
berger's Avatar
 
Joined: Apr 2002
From: Phoenix Arizona

Posts: 3,150
Thanks: 9

I Ride: 2010 FX450
Re: This isn't normal I'm guessing

Not very good
berger is offline  
June 14th, 2013, 01:34 PM   #3
Senior Member
 
Bergini's Avatar
 
Joined: May 2011
From: Wisconsin, U.S.

Posts: 700
Thanks: 3

I Ride: 1995 dakota 408 5spd 8 3/4 rear end
Re: This isn't normal I'm guessing

mine looked kind of like that, maybe a little better, i also couldnt feel grooves but could see the markings, hone my machinst guy hone it with a rigid hone and it looked nearly new after, you may be too for gone if you are feeling grooves though..........

edit: that kind of wear on a high hour thumper is pretty normal too btw.
Bergini is offline  
June 14th, 2013, 01:51 PM   #4
Senior Member
 
Tamas's Avatar
 
Joined: Nov 2012
From: Transilvania

Posts: 170
Thanks: 0

I Ride: KAWASAKI KFX450R
Re: This isn't normal I'm guessing

I was just wondering what causes this, and is it wise to go on with this cylinder, what are the risks... so on.
The thing is I don't have money for the replacement parts . Working and paying for college is hard enough as it is .

Cheers, Tom
Tamas is offline  
June 14th, 2013, 06:54 PM   #5
Senior Member
 
Bergini's Avatar
 
Joined: May 2011
From: Wisconsin, U.S.

Posts: 700
Thanks: 3

I Ride: 1995 dakota 408 5spd 8 3/4 rear end
Re: This isn't normal I'm guessing

What causes this is extreme engine forces causing the short wall , long stroke, large diameter piston to rock in the bore at high rpm thus causing scratches in the bore itself over time. the piston is alum, the wall nikasil plated steel and more high revving time/lack of piston changes causing rocking and scrathes, they start smalll and grow and grow and grow etc.

working and still paying for college, a house, two kids and a husaberg sucks just as bad, let me tell ya

Maybe i dont have enough thumper experience here to know,......it doesnt loook good but you could start with a local machine shop ridgid hone job (*not a bore/oversize at all*) which should cost 10-15 bucks then see where your at with the scratches. if there not bad then maybe you got something with this liner, but if there is a bunch of scratches left you can feel its not worth a new piston/rings IMO

markings vs scratches is the difference, markings that dont catch a nail will come out with a ridged hone......
Bergini is offline  
June 15th, 2013, 02:36 AM   #6
Senior Member
 
Bluto's Avatar
 
Joined: Aug 2005
From: The Netherlands

Posts: 199
Thanks: 15

I Ride: FE 550
Re: This isn't normal I'm guessing

+1

Try a ball ore flex hone job,fairly cheap.

Bluto is offline  
June 15th, 2013, 03:52 AM   #7
Senior Member
 
Tamas's Avatar
 
Joined: Nov 2012
From: Transilvania

Posts: 170
Thanks: 0

I Ride: KAWASAKI KFX450R
Re: This isn't normal I'm guessing

Thanks guys.
The thing is these methods are not available here, so I'm down to a new cylinder or getting a steel one made( not sure about that either). Anyway the fact remains that I wouldnt have even noticed this was an issue if I hadn't took the engine apart to change a bearing in the gearbox. No smoking, easy start cold, good compression. So this brings me to another question: when would have this come to a point when it would create real problems??? And btw what would
those problems even be? I even measured the clearance for the compression ring and its. 0.40 mm and if I read correctly the tolerances are 0.001 X BORE (millimeters), so its its not worn hard. Im in short of money and really need to consider the cheapest option. Sorry if I asked stupid questions .

Cheers, Tom
Tamas is offline  
June 15th, 2013, 04:15 AM   #8
Member
 
Joined: Dec 2011
From: north west, england

Posts: 69
Thanks: 2

I Ride:
Re: This isn't normal I'm guessing

why do you need a new cylinder ?? it only looks like the plating is damaged . theres a place local to me called motrac racing he builds top quality race bikes and offers the service for replating cylinders iv had 2 husaberg cylinders plated and quite a few from other makes with fantastic results .
you can post him your cylinder and he will post it back a couple of weeks later when its back from plating ( they take 14 days or so ) .
and its only 145 plus return postage , then your cylinder is brand new and im quite certain you wont get a brand new cylinder for that kind of money.

i can give you his phone number if you want

cheers kris
kris650berg is offline  
June 15th, 2013, 06:30 AM   #9
Senior Member
 
Tamas's Avatar
 
Joined: Nov 2012
From: Transilvania

Posts: 170
Thanks: 0

I Ride: KAWASAKI KFX450R
Re: This isn't normal I'm guessing

You are right Kris, A new one is almost double that amount. Thank you for the info. I have been searching the web and it seems there is a company which sends the cylinders to austria to get them replated. Monday I will give them a call, lets see what are they offering, but I'm guessing it's not going to be cheap....only the salaries are "cheap" here )).
If it's more than 145 pounds I will definitely PM you for the phone number or email address.

Cheers, Tom
Tamas is offline  
June 15th, 2013, 07:06 AM   #10
Senior Member
 
Bergini's Avatar
 
Joined: May 2011
From: Wisconsin, U.S.

Posts: 700
Thanks: 3

I Ride: 1995 dakota 408 5spd 8 3/4 rear end
Re: This isn't normal I'm guessing

you dont have engine repair shops or machine shops where your from??

if it were me and being cheap, i would do a quick hone and new rings and call it a day

worse thing that will happen, loss of compression or power from that compared to a newly plated cylinder.

are you putting in a new piston too?
Bergini is offline  
Reply

  Husaberg Forum > Mechanical and Technical > Mechanical

Tags
guessing, normal



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is this normal? clintovsina Mechanical 7 December 22nd, 2013 11:07 AM
Is this normal? Tamas Mechanical 3 July 17th, 2013 05:46 AM
Is this normal? twistednuts Mechanical 3 February 26th, 2013 12:32 AM
Too hot or normal? deadeyedick Fuel 1 April 1st, 2011 04:53 PM
FE 570 strange or normal? nick790 Suspension 15 January 4th, 2011 01:29 AM


Facebook Twitter Google+ RSS Feed